/**
 * 高精度乘法
 */

#include <iostream>
#include <vector>

using namespace std;

vector<int> mul(vector<int> &A, int b) {
    vector<int> C;

    int t = 0;
    for (int i = 0; i < A.size() || t; ++i) {
        if (i < A.size()) {
            t += A[i] * b;
        }
        C.push_back(t % 10);
        t /= 10;
    }
    return C;
}

int main() {
    string a;
    int b;

    cin >> a >> b;
    vector<int> A;
    for (int i = a.size() - 1; i >= 0; --i) {
        A.push_back(a[i] - '0');
    }
    auto C = mul(A, b);
    for (int i = C.size() - 1; i >= 0; --i) {
        printf("%d", C[i]);
    }
    return 0;
}